import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.contactProperties.list();

{
  "object": "list",
  "has_more": false,
  "data": [
    {
      "id": "b6d24b8e-af0b-4c3c-be0c-359bbd97381e",
      "key": "company_name",
      "type": "string",
      "fallback_value": "Acme Corp",
      "created_at": "2023-04-08T00:11:13.110779+00:00"
    }
  ]
}